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https://issues.apache.org/jira/browse/HBASE-1811?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13994721#comment-13994721
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Andrew Purtell commented on HBASE-1811:
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Is this a dup of HBASE-7958 (well, maybe I had the idea first, but it is
execution that counts) or could it be a subtask?
Ping [~jesse_yates] [~lhofhansl] [~stack]
> Snapshot HFile and region statistics at compaction time and make info
> available to clients
> ------------------------------------------------------------------------------------------
>
> Key: HBASE-1811
> URL: https://issues.apache.org/jira/browse/HBASE-1811
> Project: HBase
> Issue Type: Improvement
> Reporter: Andrew Purtell
> Priority: Minor
>
> Consider snapshotting HFile and region statistics at major and minor
> compaction time and making the info available to clients:
> * Key statistics
> ** cardinality
> ** length avg/min/max/stdev
> ** information content measure (entropy, etc.)
> ** histogram
> etc.
> * Value statistics
> ** length avg/min/max/stdev
> ** information content measure (entropy, etc.)
> ** histogram
> etc.
> * Region statistics
> ** density estimation
> ** KV count
> ** total storage size (on disk)
> ** total storage size (uncompressed)
> etc.
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